Because it's not us posters who take photos of these chicks, we just post 'em occasionally. If they made best ass for CL every year we'd probably see that too.
Why do people do it? It's just marketing, it gives more attention for the whole cup. It's what people always want to see. Larissa Riquelme got famous at the last WC, just because one photo appeared where she had a phone between her breasts, now she's a model or something.
This is a global competition when the whole world follows, unlike others that you named. Gotta sell the news. And you always know things that are easy to sell.
You're right that it's about marketing. What I find odd is why they don't flood the Internet with more of the same for other events. If the goal is to make you compliant to sell you stuff through sex to attract your eyeballs, why wait four whole years for that? If I was a marketer, I would be finding ways to flood the Internet with new softcore photos every year just as the spring thaw takes place.
Hey, it's your team you can pick whoever you want.
Although i have to admit i liked the 4-4-2 better. What about Zidane to play in Pirlo's role and Cruyff to play in Zidane's ? Now that team would scare the shit out of me.